原子量與分子量

原子量與分子量

Assessment

Assessment

Created by

鄭之偉 鄭之偉

Science

7th - 9th Grade

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11 questions

Show answers

1.

Multiple Choice

30 sec

1 pt

若甲原子與碳原子(C-12)的質量比為2:1,則甲的原子量為何?

6

12

24

48

2.

Multiple Choice

30 sec

1 pt

鈉原子和鉀原子的質量比為何?(Na=23,K=39)

1:1

8:13

23:39

2:3

3.

Multiple Choice

30 sec

1 pt

取相同數目的甲原子與碳原子做質量的比較,結果質量比為4:3,試問甲的原子量應該為何?

9

12

16

24

4.

Multiple Choice

30 sec

1 pt

下列各分子的分子量中,何者錯誤?(N=14,Ca=40,K=39,Na=23)

NH3=17

NaHCO3=101

NaOH=40

KNO3=101

5.

Multiple Choice

30 sec

1 pt

已知氫氧化鈣(Ca(OH)2)的分子量為74,且原子量H=1、O=16,則鈣(Ca)元素的原子量為多少?

17

40

57

74

6.

Multiple Choice

30 sec

1 pt

CaCO3的分子量為多少?(Ca=40)

100 g

100 mg

100 ng

100

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